Bad interface file error with GHC RC2

[Krasimir Angelov]

When I tried to build VSHaskell with the RC2 version of GHC I got the
following error:

src\lib\Registry.hsc:30:0:
    Bad interface file: C:\Program Files\Haskell\comlib-0.1\ghc-6.5.20061001/Com
Dll.hi
        Something is amiss; requested module  comlib-0.1:ComDll differs from nam
e found in the interface file comlib:ComDll

Am I doing something wrong or it is a bug? The COM library is built using Cabal.

Cheers,
  Krasimir